Molding and vulcanizing apparatus



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J. R. GAMMETER MOLDING AND VULGANIZINQAPPARATUS Filed Aug. 12. 1925 June 21 F'atented June 21, 192?.

UNITED STATES PATENT OFFICE.

JOHN B. GAMMETER, F AKRON, OHIO, ASSIGNGR T0 THE GOODBIGH comm,

OF NEW YORK, N. Y., A. CORPORAI'IQN OF NEW YORK.

MOLDING AND VULOANIZING APPABTUS.

Application fled August 12, 1835. Serial No. 49,710.

This invention relates to the art of mold ing, as in the vuloenizing of annular articles such. as tires or inner tubes, and its chief object is to provide improved molding and vulcanizing apparatus including tire molds adapted to be kept continuously at vulcanizing temperature and having advantages such as economy and facility in the mounting and removal of the articles to be vulcanized. Further objects are economy of floor space and conservation of heat.

Of the accom anying drawings:

Fig. 1 is e si e elevation of t e preferred embodiment of my invention.

Fig. 2.is a fragmentary, longitudinal section of some of the mold members, on line 2-2 of Fig. 4.

Fig. 3 is an end elevation of the apparm tus, parts being sectioned and broken away.

Fig. 4. is a vertical section of parts of the apparatus on lineH of Fig. 1, showing in eevation the body portion of one of the mold members, with a tire therein.

Fig. 5 is a plan view of the apparatus, a. part of the some being shown in section.

Referring to the drawings, the apparatus comprises e. standard supporting a ram cylinder 11 and a horizontal guide frame comprising at pair of guide rails, 12, 13, which are secured at one end to brackets l4, 15, formed on the ram cylinder 11 and secured at the other end to a cross head 16, the guide frame being supported by standards 17, 18, upon which the lower guide rail 12 is seated, and also bv the attachment or the guide 1'ails l2, 13, to the ram cylinder brackets 14, 15. p

The cross head 16 is adapted to be abutted by the adjacent terminal member of a set of mold members 19, 19. which are slidably mounted between the guide rails l2, 13. A

ram 20 mounted in the cylinder 11 is pro vided with a head 21" adapted to abut the adjacent terminal member ot' the set of mold members 19, and is formedwith guide shoes 22, 22, slidubly fitting the adjacent sides of the guide rails 12. 13.

Euch of the mold members in the embodiment here shown is formed with a tire re ceiving cavity 23 on each of its opposite faces and with u steam chamber 2st etween the the cavities, and is rubbeted as indicated at 25 to intertit in accurate regist with adjacent mold members, so that n jecent feces of contiguous mold members define a complete molding cavity for a. tire 26, here shown us being of the pneumatic though my invention. is not wholly limited thereto.

The mold members are adapted to interfit with the usual bead clamping rings '27 28. Each mold member is treversed'by a uid passage 29 from its outer to its inner periphery. The outer end of said passage is connected by a flexible with a stop-cock 30 wit a mani old ipe 31 extending elon the set of mold mem rs and supported y suitable means (not shown). The inner end of each fluid assage 29 has connected therewith a. flexible pipe 32 (Figs. 2 and 1) which is provided at at its other end with e quick-detechable coupling 33 for connection with the inlet stem M of an expunsible core 35 within the tire 26.

Each of the mold members has projecting from one side thereof in its upper region a pair of studs 36, 36, adapted to engage the inner periphery of the bead clam" ing ring 28-to support; the tire assembly [mil guide it into proper position in thelnold member in the mounting of the tire therein.

The mold members are each guided upon the rails 12, 13.,by guiding ears or shoes 37 38, progectinog from their outer peripheries and slic ubly lit-ting the guide rails, the mold members being supported by the lower rail 12. As. the supporting and guiding means ipe 30, rovided for the meld members are at their outer pe'- ripheries, outside the circle of the tire cavrails and without the disengagement oil uny connections.

The steam cavities 24 in the several mold members are connected by respective flexible pipes 39, 39, with a manifold steam pipe 40 extending along the set of mold members and supported by suitable means is connected by a flexible pipe 40 with an outlet manifold 40 for venting water of condensation.

(not 1 shown), and the lowermost region of each! For forcing udjeccut mold members of.

the set apart selectively-to remove a cured tire therefrom and mount an uncured tire therein, while maintaining the mold-closino' force of the ram upon the other I'KlOlt members and continuing the vulcanization ,of tires therein, a carriage ll is mounted u on rails 42, 42, (Fig. 3) for movement aong the set of mold members and has mounted thereon a pair of rams 413, 44, (Figs. 1 and 5) provided at their outer ends with oflset heads 46. The ram cylinders 47, 48, have olfset heads 4:9, 50, projecting latterly from their ends adjacent the ram heads, the heads 45 and 49 being adapted to be moved together between adjacent guide shoes 37 of the mold members, and

the heads 46, 50, being adapted to be moved together between adyaccnt guide shoes 38 of the mold members, when a slide 51, mounted for transverse movement upon the carriage 41 and constituting the support for the ram cylinders, is moved-toward the set of mold members. The cylinders are thus adapted, upon being charged, to actuate the rains 43, t4, and thereby to force apart the mold members with which the otl'set ram and cylinder heads are engaged, as

' shown in Figs. 1 and 5, against the force of to be actuated by 53 to move the si the ram 20. a 1

A toggle 52 connects the slide 51 with the carriage 41 (Figs. 3 and 5) and is adapted a fluid pressure cylinder assemblies, each including the tire 26, the

expansible core 35 therein, and the pearl clamping-rings 27, 28, are mounted in raflten stems 34 are connected up with the respective flexible pipes 32, the mounting of the tires preferably proceeding from one end of the set of mold members to the other, and theset of molds" being continuously heated and held in closed relation by the ram 20 f while the initialfilling of the set otinol :ls

is accomplished, so that the tire first mounted begins to'be vulcanized promptly uponla ing mounted, and the successive 1,1'1oldcavities being opened one after another in this operation bymeans of the rams 43, let.

When the mounting ofthe several tires f has been completed and when the first "mounted tire has been completely vulcanmed, thetires-are successively removed in do 51 and themoldopen--' obtained, as compared with either thepot'"- heater type of vulcanizer or the usual steamjacketed vulcanizing mold.

Floor space is economized by reason of the close assembly of a large number of mold members, the necessity of operatin space individual to each mold, for mounting and removing the tire, being eliminated.

, The mold-guiding means being outside of the tire cavity circle, the tires may be freely inserted between and removed from the mold members.

An even pressure of the mold members toward each other, determined by the yielding force of the ram 20, is constantly maintamed, which is especially desirable when the tires are of such size and character as to require softening of the rubber before the mold members are fully closed thereon.

The mold members themselves are manip- 'ulated entirely by power-operated means, the only substantial manual exertion required being that of mounting and removing the tire assemblies.

Modifications may' be resorted to without departing from the scope of my invention and I do not wholly limit my claims to the specific construction shown.

I claim:

1. Apparatus for molding annular articles, said apparatus comprising'a set of moldmembers for concurrently molding a plurality of the articles, guiding means, on mold members of the set, outside the mold l le uidin means ada )ted to conation with the mold members and the inlet" C, 1

act with the first said guiding means to tion, yielding means engaging a terminal member 01 the set for impelhng the mold members, and means engaging mold members of the set outside the mold cavity circle for separating them against the force of the said yielding means, the separating means comprising a carriage movable along the set ofmold members and mold-opening means on said. carriage.

2. Apparatus as defined in claim 1 in which each of the mold members is formed with a steam cavity therein and with mold cavities on opposite faces thereof.

3. Molding apparatus comprising a mounting for a horizontal series of mold members,

mmwsc a. see 6% mold members mounted thereon, the mold members being aiiapted to be moved thereon with reiat'mn to each other into and out of abutted relatien, operated means ,for so moving them, means for moving the mold members 0% at abut ied relation comprising a carriage and gowey ihe mmz'emeut along the set of mold members and means. on said carriage adapted to be mfierted between adqacent 1' mold membezts In Witness my hand for spreafiing me same apart.

whereof I have hereunto set 31st flay 0?? July, 1925',

JOEE E GTEE. 

